Reinforced bag



Sept. 21, 1965 c. R. MA(-ZK 3,207,419

REINFORCED BAG Original Filed June 50, 1961 FIG. I -4 l x J I 4 7 I l 8I l l A 7 s l 1 i i l I L4 r I l 4 i I -11 1 FIG.3 FIG. 4 1 ,6 I s --4\,8

g /,*--7 I 4 {9 52 INVENTOR.

CLIFFORD R. MACK ATTORNEYS United States Patent 3,207,419 REINFORCED BAGCiitford R. Mack, 66 Tomac Ave., Old Greenwich, Conn. Originalapplication June 30, 1961, Ser. No. 124,287, now Patent No. 3,130,896,dated Apr. 28, 1964. Divided and this application Apr. 28, 1964, Ser.No. 363,234

. 7 Claims. (Cl. 22955) The present application is a division of mycopending application Serial No. 124,287, filed June 30, 1961, andentitled Reinforced Bag, now Patent 3,130,896, granted April 28, 1964,which application in turn is a continuation-impart of my copendingapplication Serial No. 75,- 206, filed December 12, 1960, now abandoned,and entitled Reinforced Bag.

This invention relates to bag constructions, and more particularly to animproved bag construction which affords increased packaging protectionalong the edges of the bag, and is particularly adapted for use as ashipping container.

Many articles which are subject to damage in shipment, such asmattresses, box springs, plaster board, fiber board, prefinishedplywood, laminated plastic sheets, or other items, both large and small,call for reinforced packaging protection along their edges, which areespecially subject to injury. It is to the provision of an improvedreinforced or padded bag affording increased edge protection that myinvention is particularly directed. Further objects and advantages ofthe invention will become apparent as the following descriptionproceeds.

In general, this invention is incorporated in a bag constructedaccording to the aforementioned copending application, essentiallycomprising a tube made up of a pair of opposed side panels and a pair ofopposed face panels. The tube may be formed of a single face panel sheetand another sheet folded to integrally form an opposed face panelterminating laterally in opposed side panels; or alternatively, each ofthe face and side panels may be formed of a separate sheet. In thelatter case, the lateral margins of both face panel sheets terminatesubstantially at the outer lateral extremities of the margin portions ofthe side panels and are secured in overlying relationship to thesemargin portions, to afford a double thickness of packaging materialalong the side edges of the bag. In the former case, the doublethickness is afforded only along the lateral margins of the single facepanel sheet.

To afford further strength and protection to the longitudinal edges ofthe bag, particularly the bottom of the bag, the present inventioncontemplates that the side panels are formed with extensions foldedtransversely to the bag, and overlapping and secured to the adjacentlongitudinal margins of the face panels. This results in a greaterthickness of packaging material over the longitudinal edges of the facepanels than is available through conventional methods. Preferably, theside panel extension also overlap and are secured to one another, toform a reinforced, secure end closure of the bag.

While the specification concludes with claims particularly pointing outand distinctly claiming the subject matter which I regard as myinvention, it is believed that the invention will be more clearlyunderstood from the following detailed description of a preferredembodiment thereof, referring to the accompanying drawing, in which:

FIG. 1 is a pictorial view of elements of a bag according to oneembodiment of the invention, shown in a partially assembled condition;

FIG. 2 is a sectional plan view of the completed bag;

FIG. 3 is a view in elevation; and

FIG. 4 is a sectional plan view of an embodiment formed of a single facepanel sheet and another sheet folded to form a face panel and two sidepanels.

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Referring to FIGS. 1-3, the invention may preferably be embodied in abag comprising a pair of opposed gusset side panel sheets 1 and a pairof opposed face panel sheets 2 each originally separate from the others.One of the face panels has been omitted from FIG. 1 to more clearlyillustrate the construction. The face panels have top and bottom, orlongitudinal edges, and side, or lateral edges. The side panels 1 arecreased to form conventional gussets 3, which permit the bagconveniently to be folded and stored prior to use. The side panels areformed with margin portions 4 which are folded to extend laterally ofthe bag and parallel to the face panels, and the face panels 2 overliethese margins and terminate at their outer extremities at the lateraledges of the bag. The lateral margins of the face panels are secured tocorresponding ones of the margin portions 4 by pasting, stitching, or inany well-known manner suitable to the particular material and intendedapplication of the bag. A double layer of packaging material is thusformed over the lateral edges of the composite bag.

In order to afford a multiple packaging layer over the longitudinal edgemargins of the face panels at the bottom end of the bag, and to form asecure bottom end closure, I form the side panels 1 with extensions 5which initially project downwardly beyond the longitudinal bottom edgesof the face panels, in the incomplete stage of construction shown inFIG. 1. The extensions 5 are formed with margin portions 6, which areinitially folded as shown, to extend laterally of the bag and parallelto the face panels. The margin portions 4 and 6 are notched or cut awayat 7 and 8, respectively, to permit the extensions 5 to be foldedupwardly and transversely of the bag into overlapping engagement withthe face panels, as shown in FIG. 3. The extensions are pasted orotherwise suitably secured one to the other, and to the interiorsurfaces of the face panels. The margins adjacent the lower edges 9 ofthe extensions overlap to form a secure bottom end closure, and to braceapart the bottom margins of the face panel relative to one another.

Referring to FIG. 4, a modified embodiment is shown in which pairs ofopposed side panels and one of the face panels are formed from a singlesheet, and one of the face panels is formed from a separate sheet.Reinforcing protection is thus afforded only along the lateral marginsof one face of the bag. In this construction, two side panels 50 and oneface panel 52 are formed from a single sheet, with margin portions 54overlying the lateral margins of a face panel sheet 56, which terminatesat the outer lateral extremities of the side panels. The side panels mayinclude inwardly folded extensions, similar to extensions 5, which aresecured to, and reinforce, the longitudinal margins of the face panelsto form a bottom end closure and to afford a multiple packaging layerover the longitudinal edge margins of the face panels at the bottom endof the bag.

The use of separate face and side panel sheets facilitates the optionaluse of different materials in these panels. Furthermore, the improvedbags may conveniently be formed from assemblies of continuous rolls ofside panelling with pre-cut face panels; this permits printing orlithography of the face panels in a fiat condition prior to assembly ofthe bags. The difficulty of registering cuts with previously printedmaterial on a continuous roll of face panelling may thus be eliminated,and the printing or lithography simplified. Alternatively, however, thebags may be cut from assemblies of continuous rolls of side and facepanels. My improved construction is applicable to various packagingmaterials, including plastics, papers, and textiles, or to combinationsof such differing materials.

While I have shown and described preferred embodiments of my inventionby way of illustration, it will be 3, apparent to those skilled in theart that various changes and modifications may be made without departingfrom the true spirit and scope of the invention.

Having thus describedmy invention, what I claim and desire to secure byLetters Patent of the United States is:

1. A bag comprising a pair of opposed side panels, and a pair of opposedface panels, said side panels formed with longitudinally-extendingmargin portions overlying corresponding lateral margins of said facepanels and secured thereto, said side panels formed with extensionsfolded transversely to the bag, each of said extensions overlapping andsecured to the other extension and adjacent longitudinal margins of saidface panels to form an end closure of the bag.

2. A bag comprising a pair of opposed side panels and a pair of opposedface panels, said side panels formed with extensions including a bodyportion comprising a continuation of the side panel and foldedtransversely to the bag and including side margin portions folded toextend parallel to the corresponding side margins of the face panels andsecured thereto in overlying relation, each of said extensionsoverlapping and secured to the other extension and to the adjacentlongitudinal margins of said face panels to form an end closure of thebag;

3. A bag as set forth in claim 2 in which said 'side panels are formedfrom the same face panel.

4. A bag comprising a pair of opposed side panels and a pair of opposedface panels each originally separate from the others, said side panelsformed with both side margins portions folded to extend parallel to thecorresponding side margins of the face panels and secured thereto inoverlying relation, said side panels formed with extensions foldedtransversely to the bag and secured to the adjacent longitudinal marginsof said face panels to form an end closure of the bag.

5. A bag as set forth in claim 4 in which said extensions include a bodyportion comprising a continuation of the side panel and foldedtransversely to the bag, and include side margin portions folded toextend parallel to the corresponding side margins of the face panels andsecured thereto in overlying relation.

6. A bag as set forth in Claim 5 in which the end portions of said sidepanel extensions overlap and are secured to one another.

7. A bag comprising a pair'of opposed side panels and a pair of opposedface panels each, originally separate from the others,'said side panelsformed with extensions projecting from one end only of thebag, saidextensions including a body portion comprising a continuation of theside panel;and folded transversely tov the bag, and side margin portionsfolded to extend parallel to the corresponding side margins of thefacerpanels and secured thereto in overlying relation, the side marginportions being secured within said face panels, said side panelextensions overlapping and being secured to. one another to form an endclosure at one end only of the bag, said side panels terminating at theother end of the bag to form with the face panels an open mouth.

No references cited. I

FRANKLIN T. GARRETT, Primary Examiner.

1. A BAG COMPRISING A PAIR OF OPPOSED SIDE PANELS, AND A PAIR OF OPPOSEDFACE PANELS, SAID SIDE PANELS FORMED WITH LONGITUDINALLY-EXTENDINGMARGIN PORTIONS OVERLYING CORRESPONDING LATERAL MARGINS OF SAID FACEPANELS AND SECURED THERETO, SAID SIDE PANEL FORMED WITH EXTENSIONSFOLDED TRANSVERSELY TO THE BAG, EACH OF SAID EXTENSIONS OVERLAPPING ANDSECURED TO THE OTHER EXTENSION AND ADJACENT LONGITUDINAL MARGINS OF SAIDFACE PANELS TO FORM AN END CLOSURE OF THE BAG.